Best Cartoon Voice in History: TreeTrunks on Adventure Time

I hope you know by now I’m rather infatuated with voice characterizations (Jim Meskimen as new Mel Blanc). Meet the best new voice impressionist ever: Polly Lou Livinston, tapped by animator Pen Ward, 27. Ward, who created the recently launched CartoonNetwork show, “Adventure Time With Finn and Jake” (a bland name for a quirky, unique…